Robust Stability of Dynamic Interval Systems with Time-Delay

In this paper, the robust stability problem of perturbed dynamic interval systems with time-delay is considered Firstly, a kind of equivalent description of the interval systems is presented. Then by using Lyapunov stability theory, matrix measure approach and some properties of spectral radius, several simple sufficient conditions are obtained which guarantee the robust stability of the perturbed time-delay dynamic interval systems. These conditions possess simple forms and provide useful tools to check stability of systems at first stage, and generalize the previous works. Examples are also given to illustrate our main results.